[potatochup]

The biggest concern I have with black boxes like this is how its going to interact with updates. Presumably they are intercepting messages on the CAN bus. The CAN bus is fairly easy to crack if you know what you are doing, but it also could change with the software version. The black box has probably hardcoded the message IDs that they are intercepting, but if the messages get reshuffled around in a software update it'll be sending out some data for some random other message which could have safety implications.